Most drug users are employed, and when they arrive for work, they don’t leave their problems at the door. Some costs—increased absences, accidents and errors—are obvious. Others, such as low morale and high illness rates, are less so, but their effects may be equally harmful. Small businesses are often burdened with the costs from drug users since smaller employers often do not have the resources to address the problem.

In fact, according to the United State Department of Labor, 87% of full-time employed illicit drug users work for businesses having less than 500 employees. Over 40% work for businesses with less than 25 employees. To protect your business and employees, consider the following ten reasons to establish a drug-free workplace policy.